Synthesis and Adsorption Study of some Chitosan Acid Derivatives as Dispersants for Ceramic Alumina Powders

Al-Allaq, Eman; Al-Lami, Hadi S.; Al‐Mowali, Ali H.

doi:10.21608/ejchem.2019.15492.1940

Cited by 4 publications

(6 citation statements)

References 31 publications

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“…The sulfonation reaction by sulfuric acid provides sulfonic groups SO3H + attached to the poly s tyrene backbone chains, giving ion exchange capacity to the poly s tyrene, which will be a center for the grafted acrylic monomer and chitosan polymer material to make up copolymers attached to the sulfonated poly s tyrene [10][11][12]. One advantage of this approach is the ability to precisely modify characteri s tics by adju s ting the grafting or sulfonating conditions.…”

Section: Resultsmentioning

confidence: 99%

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Preparation of recycled poly s tyrene derivatives to remove heavy metal ions from contaminated water

Al-Lami

Al-Mosawi

Awad

2023

Anal. Method Environ. Chem. J.

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In recent years, numerous researchers have concentrated on the process of turning waste into usable materials. Polystyrene and its modifications have received great attention over the past few decades due to their outstanding ion exchange behavior toward various toxic heavy metals in aqueous solutions. Therefore, this study is concerned with the preparation of three different cationic polymeric resins for the removal of Pb2+, Cd2+, and Fe3+ heavy metal ions from their contaminated water samples based on the sulfonated single-used polystyrene teacup waste (SPS), which was used to prepare sulfonated polystyrene-g-acrylamide monomer (SPS-g-Acryl) and sulfonated polystyrene-g-chitosan (SPS-g-Chit) using commercial chitosan (DD=85%) originally extracted from shrimp cortex. The concentrations of the selected heavy metal ions were measured before and after each experiment with a flame atomic absorption spectrometer (F-AAS). The analytical studies started by exploring the influence of pH (2, 4, 6, and 8) on removing the heavy metal ions Pb2+, Cd2+, and Fe3+ from their aqueous solutions. The obtained results revealed that as the pH of the analyzed ion solution is increased, the removal efficiency for ions increases. All three resins (SPS, SPS-g-Acryl, and SPS-g-Chit) had different removal efficiencies for the investigated ions, with SPS-g-Chit resin.

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Section: Resultsmentioning

confidence: 99%

“…The SPS-g-Chit was filtered and rinsed three times with deionized water and acetone after allowing the liquid to cool to room temperature. The white product was dried using a vacuum desiccator [12,13]. The grafting reaction of the chitosan on the sulfonated poly s tyrene is depicted in Scheme 2.…”

Section: Synthesis Of Sps-g-chitosan Resin (Sps-g-chit)mentioning

confidence: 99%

Preparation of recycled poly s tyrene derivatives to remove heavy metal ions from contaminated water

Al-Lami

Al-Mosawi

Awad

2023

Anal. Method Environ. Chem. J.

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“…The mixture was heated to a refluxed temperature for two hours while being magnetically swirled. It was then given a good shake and allowed to cool to room temperature [22]. The Chitosan-g-succinic acid was filtered and repeatedly cleaned with acetone and deionized water, respectively, before drying in the vacuum desiccator.…”

Section: Preparation Of Chitosan-grafted-succinic Acidmentioning

confidence: 99%

Chemically Plasticized Chitosan Films by Grafting Succinic Acid: Surface Roughness and Mechanical Properties

S.¹

2022

Int. J. Membrane Sci. Techno.

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A useful alternative to conventional plastic packaging manufactured from fossil fuels is packaging constructed of a biodegradable polymer. The final qualities of the chitosan cast films heavily depend on the type of plasticizer used and how it is incorporated into the chitosan-based material. This work investigates the synthesis of chitosan chemically grafted with succinic acid to improve the physical and mechanical properties of the film. The cortex of local shrimp was used to make a chitosan extract with a molecular weight of 2.702x105 g/mole and a deacetylation level of 80%. The chemically plasticized chitosan film was characterized by FTIR. It was found that chitosan and grafted chitosan film spectra were different from each other, implying the true grafting of succinic acid had occurred and the main backbone of the chitosan structure was unaffected. An examination of the mechanical properties of the films revealed that the results of the tensile strength measurement showed an improvement in the strength and %elongation at break for the chitosan grafted with succinic acid cast film for packaging, which is one of the potential applications for biodegradable chitosan.

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“…Chitosan is a special cationic polysaccharide with an excellent affinity for various surfaces and out s tanding cosmetic properties, even when left unaltered. It is a naturally occurring cationic copolymer [1]. This biopolymer, which is abundant in nature (the second one after cellulose), holds much promise for various uses.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, chitosan has been successfully used as a scaffold for biomedical applications, water engineering, treatment, the food indu s try, films, coatings, and con s truction fields. The functionalization of its chemical s tructure often enhances its characteri s tics until it obtains properties equivalent to synthetic products [1]. The development of chitosanbased materials has attracted much attention due to their great qualities, such as, nontoxicity, biodegradability, biocompatibility, antibacterial properties, and biofunctional characteri s tics, not only in the biomedical sector but also in the field of food contact materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation of chitosan films plasticized by lauric and maleic acids

Mutasher

Al-Lami

2022

Anal. Method Environ. Chem. J.

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The energy crisis and environmental concerns have increased interest in natural polymers, and the bio-sourced materials field is experiencing rapid growth. A useful alternative to conventional plastic packaging manufactured from fossil fuels is packaging constructed of biodegradable polymers. Consideration has been given to the instrumental methods for examining modifications to the chemical composition and characteristics of modified chitosan. The molecular weight and the kind of plasticizer present in these materials are the two primary variables influencing their usability and performance. This study set out to physically blend chitosan with two different acids, lauric and maleic, to enhance chitosan cast films' physical and mechanical properties. Different plasticizer ratios appeared to have little effect on the various properties of the chitosan cast films. Examining the obtained films by FTIR implies that chitosan's native structure was unchanged. The films prepared had more flexibility and better solubility than those made with un-plasticized chitosan. It was evident from an analysis of the mechanical properties of the films that both acid plasticizers enhanced the mechanical properties of the chitosan.

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Synthesis and Adsorption Study of some Chitosan Acid Derivatives as Dispersants for Ceramic Alumina Powders

Cited by 4 publications

References 31 publications

Preparation of recycled poly s tyrene derivatives to remove heavy metal ions from contaminated water

Preparation of recycled poly s tyrene derivatives to remove heavy metal ions from contaminated water

Chemically Plasticized Chitosan Films by Grafting Succinic Acid: Surface Roughness and Mechanical Properties

Preparation of chitosan films plasticized by lauric and maleic acids

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